N, P, Q = map(int, input().split())
A = list(map(int, input().split()))
power10 = [pow(10, a, P) for a in A]
power9 = [pow(9, a, P) for a in A]
power7 = [pow(7, a, P) for a in A]
power5 = [pow(5, a, P) for a in A]
count = 0
for i in range(N-3):
    for j in range(i+1, N-2):
        for k in range(j+1, N-1):
            for l in range(k+1, N):
                if (power10[i] + power9[j] + power7[k] + power5[l]) % P == Q:
                    count += 1

print(count)